Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR) , Chinese Academy of Sciences (CAS) , No. 72 Wenhua Road , Shenyang 110016 , China.
Department of Plastic Surgery , The First Affiliated Hospital of China Medical University , No. 155 North Nanjing Street , Shenyang 110001 , China.
ACS Appl Mater Interfaces. 2019 Jul 10;11(27):24459-24467. doi: 10.1021/acsami.9b07423. Epub 2019 Jun 27.
Flexible optoelectronics is an emerging research field that has attracted a great deal of interest in recent years due to the special functions and potential applications of these devices in flexible image sensors, optical computing, energy conversion devices, the Internet of Things, and other technologies. Here, we examine the high-performance ultraviolet (UV) photodetectors using AZO/ZnO nanorods/PVK/PEDOT:PSS heterostructures integrated on human hair. Due to the precise interfacial energy-level alignment among all layers and superior mechanical characteristics of human hair, the as-obtained photodetector shows a fast response time, high photoresponsivity, and excellent flexibility. According to integrate 7 heterostructures as 7 display pixels, the flexible UV-image sensor has superior device performance and outstanding flexibility and can produce vivid and accurate images of Arabic numerals from 0 to 9. Different combinations of the two heterostructures can also be used to achieve flexible photon-triggered logic functions, including AND, OR, and NAND gates. Our findings indicate the possibility of using human hair as a fiber-shaped flexible substrate and will allow the use of hair-based hierarchical heterostructures as building blocks to create exciting opportunities for next-generation high-performance, multifunctional, low-cost, and flexible optoelectronic devices.
柔性光电是一个新兴的研究领域，由于这些器件在柔性图像传感器、光计算、能量转换器件、物联网和其他技术中的特殊功能和潜在应用，近年来引起了极大的兴趣。在这里，我们研究了使用 AZO/ZnO 纳米棒/PVK/PEDOT:PSS 异质结构集成在人发上的高性能紫外 (UV) 光电探测器。由于所有层之间的精确界面能级对准和人发的优异机械特性，所获得的光电探测器表现出快速的响应时间、高光电响应率和优异的柔韧性。根据集成 7 个异质结构作为 7 个显示像素，该柔性 UV 图像传感器具有优异的器件性能和出色的柔韧性，可以生成生动准确的 0 到 9 阿拉伯数字图像。这两种异质结构的不同组合也可用于实现灵活的光子触发逻辑功能，包括与门、或门和与非门。我们的研究结果表明，将人发用作纤维状柔性基板是可行的，并且将基于毛发的分层异质结构用作构建块，可以为下一代高性能、多功能、低成本和灵活的光电设备创造令人兴奋的机会。
